title: First example of a high-level correlated calculation of the indirect spin-spin coupling constants involving tellurium: tellurophene and divinyl telluride.
abstract: This paper documents the very first example of a high-level correlated calculation of spin-spin coupling constants involving tellurium taking into account relativistic effects, vibrational corrections and solvent effects for medium sized organotellurium molecules. The (125)Te-(1)H spin-spin coupling constants of tellurophene and divinyl telluride were calculated at the SOPPA and DFT levels, in good agreement with experimental data. A new full-electron basis set, av3z-J, for tellurium derived from the "relativistic" Dyall's basis set, dyall.av3z, and specifically optimized for the correlated calculations of spin-spin coupling constants involving tellurium was developed. The SOPPA method shows a much better performance compared to DFT, if relativistic effects calculated within the ZORA scheme are taken into account. Vibrational and solvent corrections are next to negligible, while conformational averaging is of prime importance in the calculation of (125)Te-(1)H spin-spin couplings. Based on the performed calculations at the SOPPA(CCSD) level, a marked stereospecificity of geminal and vicinal (125)Te-(1)H spin-spin coupling constants originating in the orientational lone pair effect of tellurium has been established, which opens a new guideline in organotellurium stereochemistry.
authors.affiliation: A.E. Favorsky Irkutsk Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky St., 664033 Irkutsk, Russia. krivdin_office@irioch.irk.ru.
authors.forename: Yury Yu
authors.initials: YY
authors.lastname: Rusakov
authors.affiliation: A.E. Favorsky Irkutsk Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky St., 664033 Irkutsk, Russia. krivdin_office@irioch.irk.ru.
authors.forename: Leonid B
authors.initials: LB
authors.lastname: Krivdin
authors.affiliation: Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark.
authors.forename: Freja F
authors.initials: FF
authors.lastname: Østerstrøm
authors.affiliation: Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark.
authors.forename: Stephan P A
authors.initials: SPA
authors.lastname: Sauer
authors.affiliation: A.E. Favorsky Irkutsk Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky St., 664033 Irkutsk, Russia. krivdin_office@irioch.irk.ru.
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Potapov
authors.affiliation: A.E. Favorsky Irkutsk Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky St., 664033 Irkutsk, Russia. krivdin_office@irioch.irk.ru.
authors.forename: Svetlana V
authors.initials: SV
authors.lastname: Amosova
mesh_terms: D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D011789:Quantum Theory; D013691:Tellurium / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D013691:Tellurium